Sony (BA-1) KV-20TS29

# Sony (BA-1) KV-20TS29 CRT RGB mod

The Sony KV-20TS29 is a 20" Trinitron Color TV launched in 1993, known for its excellent display quality. This CRT display utilizes an aperture grille mask, delivering vibrant colors and sharp images.

This set supports RGB modding using the direct injection method. While the Sony KV-20TS29 does not ship with S-Video like the KV-20TS32.

If you’re looking for an easy and reliable RGB mod candidate, this is an excellent choice. Few Sony sets are this straightforward to work with.

View full CRT details and more mod examples →open in new window

# Contributors

Thank you to everyone who contributed to this guide:

• Gabeopen in new window — showcase author
• Joelopen in new window — showcase author
• Mike Morisetteopen in new window — contributor, CRT specs from CRT Database.
• bluntninjaopen in new window — contributor, Reddit Thread

# CRT safety

READ THIS BEFORE CONTINUING

# Plan of attack

READ THIS TO PREPARE

# Manuals and Datasheets

• Sony KV-20TS29 Service Manualopen in new window

# Specs

• Manufactured: Mexico (2001)
• Format: NTSC
• Chassis: BA-1
• Tube: Sony Trinitron A51JUH51X
• Jungle Chip: Sony CXA1465AS
• OSD Chip: CXP80424
• Screen Size: 20"
• Inputs: Composite, RF

# RGB mux diagram

Prepare the mux diagram. If you are building your own circuit, this diagram should help.

# Performing the mod

You can't ask for a more straightforward RGB mod.

Fortunately this chassis doesn't require any muxing. You can pass R, G, B through a 0.1uF, 75ohm terminated wire directly to the CN101 header. Blanking (Ys) can be fed through a 1kΩ + 0.7V didoe to pin 5 of the CN101 header.

# STEP 1: Connect RGB, Blanking and Audio

You only need about a maxium 1 feet length of ribbon cable. Shorter this cable the better as it reduces interferece.

See picture to see where blanking, R, G, B should be connected. Blanking (Ys), Red, Green, Blue lines are exposed on 5, 6, 7, 8 of the CN101 connector.

V1 V-IN for SYNC V1 L-IN for Left Audio V1 R-IN for Right Audio E for GROUND

# STEP 2: Build your mux board (optional)

This mod uses the RGB mux board. This is optional, but will make your mod easier and stable. You can also create the circuit presented in the schematics above without the board. Please also checkout the mux calculatoropen in new window to play with your own values.

Compatible mux boards:

• RGB MUX BOARD KIT 1.4Copen in new window

Buy your RGB mux board kit

# STEP 3: Attach the female SCART connector to TV

Sony KV-20TS29 had this sticker at the back that made it very difficult to cut the SCART port. Cutting this port is probably most complex part of this mod.

Creating a SCART cutout and mounting it is an art. I have a dedicated section for it.

How to create and mount a SCART female plug?

# Service Menu

On the remote, press keys in this sequence DISPLAY, 5, VOL +, POWER

1 and 4 to select 3 and 6 to adjust

MUTING, ENTER to write to memory.

# Pictures

# Photos by Gabeopen in new window

S-Video modification showcase

# Photos by Joelopen in new window

A weird artifact was seen after 30 minutes. Culprit was flux. After cleaning from the mux board, everything worked well.

# Reference Photos

See more photos and contributions →open in new window